1303231002311 has 4 divisors (see below), whose sum is σ = 1489406859792. Its totient is φ = 1117055144832.

The previous prime is 1303231002301. The next prime is 1303231002331. The reversal of 1303231002311 is 1132001323031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1303231002311 is a prime.

It is a super-2 number, since 2×1303231002311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303231002301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93087928730 + ... + 93087928743.

It is an arithmetic number, because the mean of its divisors is an integer number (372351714948).

Almost surely, 2^{1303231002311} is an apocalyptic number.

1303231002311 is a deficient number, since it is larger than the sum of its proper divisors (186175857481).

1303231002311 is an equidigital number, since it uses as much as digits as its factorization.

1303231002311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186175857480.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1303231002311 its reverse (1132001323031), we get a palindrome (2435232325342).

The spelling of 1303231002311 in words is "one trillion, three hundred three billion, two hundred thirty-one million, two thousand, three hundred eleven".